METHOD FOR ALLOCATING RESOURCE FOR DEVICE-TO-DEVICE COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREOF

• US 20160044724A1
• Filed: 03/25/2014
• Published: 02/11/2016
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SEO, Hanbyul, YANG, Suckchel, KIM, Myoungseob
• Granted Patent: US 9,844,085 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/1664 the supervisory signal being transmitted together with payload signals; piggybacking
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

Disclosed in the present application is a method for transmitting/receiving a signal using device-to-device communication by a user equipment in a wireless communication system. More specifically, the method comprises the steps of: transmitting a first signal in contention slot included in one of a plurality of contention intervals; receiving, in response to the first signal, a second signal in the contention slot in which the first signal is transmitted; and transmitting/receiving a data signal or a response signal to the data signal in at least one time resource corresponding to the one of the plurality of contention intervals by using device-to-device communication.

Claims

1. A method for transmitting and receiving a signal through UE-to-UE communication by a user equipment (UE) in a wireless communication system, comprising:

transmitting a first signal in a contention slot contained in one contention section from among a plurality of contention sections;

receiving a second signal as a response to the first signal in the contention slot in which the first signal is transmitted; and

transmitting/receiving a data signal or a response signal to the data signal, using UE-to-UE communication in one or more time resources corresponding to the one contention section.

2. The method according to claim 1, wherein the number of contention slots contained in each of the plurality of contention sections is determined on the basis of the number of the time resources.

3. The method according to claim 1, wherein the positions of frequency resources for the data signal and the response signal are determined on the basis of the position of frequency resource through which the first signal is transmitted.

4. The method according to claim 1, wherein the first signal includes specific information regarding the positions of frequency resources for the data signal and the response signal.

5. The method according to claim 1, wherein the first signal includes information regarding a frequency bandwidth for the data signal and the response signal.

6. The method according to claim 1, wherein the transmitting the first signal includes:

generating a random number; and

if the random number is equal to or less than a predetermined value, transmitting the first signal in the contention slot.

7. A user equipment (UE) for performing UE-to-UE communication in a wireless communication system, comprising:

a radio frequency (RF) module configured to transmit/receive a signal to and from a base station (BS) or a counterpart UE of the UE-to-UE communication; and

a processor configured to process the signal,

wherein the processor, when the processor transmits a first signal in a contention slot contained in one contention section from among a plurality of contention sections, and receives a second signal as a response to the first signal in the contention slot in which the first signal is transmitted, is configured to control the RF module to transmit/receive a data signal or a response signal to the data signal using UE-to-UE communication in one or more time resources corresponding to the one contention section.

8. The user equipment (UE) according to claim 7, wherein the number of contention slots contained in each of the plurality of contention sections is determined on the basis of the number of the time resources.

9. The user equipment (UE) according to claim 7, wherein the positions of frequency resources for the data signal and the response signal are determined on the basis of the position of frequency resource through which the first signal is transmitted.

10. The user equipment (UE) according to claim 7, wherein the first signal includes specific information regarding the positions of frequency resources for the data signal and the response signal.

11. The user equipment (UE) according to claim 7, wherein the first signal includes information regarding a frequency bandwidth for the data signal and the response signal.

12. The user equipment (UE) according to claim 7, wherein the processor generates a random number, and controls the RF module to transmit the first signal in the contention slot when the random number is equal to or less than a predetermined value.